I emailed the seller for some technical information regarding the current supply on the 5V rail (I need 7 to 8A continuous with bursts for up to 10A), and the available startup/shutdown settings of the unit - and they responded by telling me that all the information they had was already in the listing and that they couldn't help me!

That's nuts. You couldn't buy it even if you wanted to without knowing what it can do.

Sorry to bring this thread back up, but i bought one of those fake/different M2-ATX power supplies (I thought it was real as it was advertised as an M2-atx). I have looked through the documentation you provided for these fake/alternative PSU but it is still slightly different to the one I have.

This is a picture of mine

So it is the one with the two connections at the end of the PCB near the 20pin atx connector, not the one or three connections PCB.

What I need to know is what connection do I use to connect to my motherboard, and what connection do I use as a remote wire to go to my amp. The rest of the wiring is the same as the PDF's that were posted before.